1055540307 has 32 divisors (see below), whose sum is σ = 1528299520. Its totient is φ = 645835680.

The previous prime is 1055540303. The next prime is 1055540351. The reversal of 1055540307 is 7030455501.

It is not a de Polignac number, because 1055540307 - 2² = 1055540303 is a prime.

It is a super-2 number, since 2×1055540307² = 2228330679403308498, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1055540303) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 309582 + ... + 312972.

It is an arithmetic number, because the mean of its divisors is an integer number (47759360).

Almost surely, 2^1055540307 is an apocalyptic number.

1055540307 is a deficient number, since it is larger than the sum of its proper divisors (472759213).

1055540307 is a wasteful number, since it uses less digits than its factorization.

1055540307 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3583.

The product of its (nonzero) digits is 10500, while the sum is 30.

The square root of 1055540307 is about 32489.0798115305. The cubic root of 1055540307 is about 1018.1808877873.

Adding to 1055540307 its reverse (7030455501), we get a palindrome (8085995808).

The spelling of 1055540307 in words is "one billion, fifty-five million, five hundred forty thousand, three hundred seven".